But can I change the operating frequency of the second stage of inverter from 50 hz to whatever is the maximum operating frequency of the IC that drives the second stage of the inverter, am I right? Coz we know the ordinary inverter today has two stage, 1st is to boost the 12V to 330V by using ferrite transformer that operates at high frequency and 2nd is to feed the 330V to full bridge inverter that operates at 50hz, that's my plan to change the operating frequency of the second stage.